Ariana Grande and Big Sean chose the oddest place to get romantic last weekend -- a haunted roller coaster. The couple hopped on the Revenge Of The Mummy ride at Universal Studios in Hollywood, and just as the camera captured the terrifying expressions of everyone else on the ride, Big Grande gave each other a giant, spooky smooch.

The photo later showed up on Twitter, causing fans to go into a frenzy, since the two stars haven't made their relationship public yet. They were seen backstage at the 2014 Video Music Awards holding hands, and two weeks ago, she Instagrammed their shadows together.

Related: Ariana Grande And Big Sean: A Timeline Of Their Relationship.

Ariana also brought along brother Frankie to Universal, sharing two ridiculous videos of him scarily singing in a haunted house.

Frankie, in turn, shared a cute snap of them mugging to the camera, looking only a little bit scared.

Time to celebrate true love!